【Android自定义控件】选择输入框的实现

1.场景

Android开发中经常会用到选择输入控件，比如性别的输入

2.示例图片

3.代码组成

1）演示用的主界面布局不多说，这里采用EditText + 一个自定义的底部列表对话框来实现的
2）布局文件

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="@color/main_bg_color"
    android:gravity="center"
    android:orientation="vertical" >

    <EditText
        android:id="@+id/demo_edittext"
        android:layout_width="match_parent"
        android:layout_height="35dip"
        android:layout_marginLeft="20dip"
        android:layout_marginRight="20dip"
        android:background="@drawable/white_corner_8_bg"
        android:drawableRight="@drawable/edit_select_icon"
        android:editable="false"
        android:focusable="false"
        android:gravity="center_vertical"
        android:hint="性别"
        android:paddingLeft="8dip"
        android:paddingRight="8dip"
        android:singleLine="true" />

LinearLayout>

3）Activity代码

/**
 * 
 */
package com.acoe.demo.select.activity;

import com.acoe.demo.select.R;
import com.acoe.demo.select.widget.BottomListDialog;

import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.AdapterView;
import android.widget.EditText;
import android.widget.AdapterView.OnItemClickListener;

/**
 * 选择输入框示例
 * @author Acoe
 * @date 2016-1-15
 * @version V1.0.0
 */
public class DemoActivity extends Activity {
    private EditText edtGender;
    private BottomListDialog genderDialog;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.demo_activity);

        initUI();
    }

    /**
     * 初始化界面
     */
    private void initUI() {
        // 设置标题
        setTitle("选择编辑框");
        // 控件
        edtGender = (EditText) findViewById(R.id.demo_edittext);
        edtGender.setOnClickListener(new OnClickListener() {
            @Override
            public void onClick(View v) {
                showSelectGender();
            }
        });
    }

    /**
     * 选择性别
     */
    private void showSelectGender() {
        if(genderDialog == null){
            genderDialog = new BottomListDialog(DemoActivity.this, new String[]{ "男", "女" }, new OnItemClickListener() {
                @Override
                public void onItemClick(AdapterView parent, View view, int position, long id) {
                    genderDialog.dialog.dismiss();
                    if(position == 0){
                        edtGender.setText("男");
                    }else{
                        edtGender.setText("女");
                    }
                }
            });
            genderDialog.setTitleText("选择性别");
        }
        genderDialog.dialog.show();
    }
}

4）底部弹出框

package com.acoe.demo.select.widget;

import com.acoe.demo.select.R;
import com.acoe.demo.select.utils.SystemUtils;

import android.app.Dialog;
import android.content.Context;
import android.view.Gravity;
import android.view.View;
import android.view.Window;
import android.view.WindowManager;

/**
 * 底部弹出框
 * 
 */
public class BottomDialog extends Dialog {

    public BottomDialog(Context context, View view) {
        super(context, R.style.Dialog);
        setContentView(view);

        Window  window = getWindow(); //得到对话框  
        window.setWindowAnimations(R.style.AnimBottom); //设置窗口弹出动画  
        WindowManager.LayoutParams wl = window.getAttributes();  
        //根据x，y坐标设置窗口需要显示的位置  
        wl.gravity = Gravity.BOTTOM;
        wl.width = WindowManager.LayoutParams.MATCH_PARENT;
        wl.height = WindowManager.LayoutParams.WRAP_CONTENT;
        wl.alpha = 1.0f;
        window.setAttributes(wl);  
        //设置触摸对话框以外的地方取消对话框  
        setCanceledOnTouchOutside(true);  
        setCancelable(true);
    }

    public BottomDialog(Context context, View view, int height) {
        super(context, R.style.Dialog);
        setContentView(view);

        Window  window = getWindow(); //得到对话框  
        window.setWindowAnimations(R.style.AnimBottom); //设置窗口弹出动画  
        WindowManager.LayoutParams wl = window.getAttributes();  
        //根据x，y坐标设置窗口需要显示的位置  
        wl.gravity = Gravity.BOTTOM;
        wl.width = WindowManager.LayoutParams.MATCH_PARENT;
        if (height < 0 || height >= SystemUtils.getPhoneHeight(context)) {
            wl.height = WindowManager.LayoutParams.WRAP_CONTENT;
        } else {
            wl.height = height;
        }
        wl.alpha = 1.0f;
        window.setAttributes(wl);  
        //设置触摸对话框意外的地方取消对话框  
        setCanceledOnTouchOutside(true);  
        setCancelable(true);
    }

}

5）列表对话框

/**
 * 
 */
package com.acoe.demo.select.widget;

import java.util.List;

import com.acoe.demo.select.R;

import android.annotation.SuppressLint;
import android.app.Dialog;
import android.content.Context;
import android.graphics.Color;
import android.text.TextUtils.TruncateAt;
import android.util.TypedValue;
import android.view.Gravity;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.ListView;
import android.widget.TextView;
import android.widget.AbsListView.LayoutParams;
import android.widget.AdapterView.OnItemClickListener;

/**
 * 列表对话框
 * @author Acoe
 * @date 2016-1-15
 * @version V1.0.0
 */
public class BottomListDialog {
    private TextView txtTitle;
    private ListView lsvList;
    private String[] items;
    public Dialog dialog;
    private Context context;

    public BottomListDialog(Context context, List list, OnItemClickListener onItemClickListener) {
        String[] items = new String[list.size()];
        items = list.toArray(items);

        initUI(context, items, onItemClickListener);
    }

    public BottomListDialog(Context context, String[] items, OnItemClickListener onItemClickListener) {
        initUI(context, items, onItemClickListener);
    }

    /**
     * 初始化对话框
     * @param context
     * @param items
     * @param onItemClickListener
     */
    @SuppressLint("InflateParams")
    private void initUI(Context context, String[] items, OnItemClickListener onItemClickListener) {
        this.context = context;
        View view = LayoutInflater.from(context).inflate(R.layout.bottom_list_dialog, null);
        this.lsvList = (ListView) view.findViewById(R.id.dialog_listview);
        this.txtTitle = (TextView) view.findViewById(R.id.bottom_title);
        lsvList.setAdapter(new ListAdapter());
        //弹出对话框
        dialog = new BottomDialog(context, view);
        this.items = items;
        lsvList.setOnItemClickListener(onItemClickListener);
    }

    public void setTitleVisiblity(int visibility) {
        txtTitle.setVisibility(visibility);
    }

    public void setTitleText(String text) {
        txtTitle.setText(text);
    }

    class ListAdapter extends BaseAdapter{
        @Override
        public int getCount() {
            return items==null ? 0 : items.length;
        }

        @Override
        public Object getItem(int position) {
            return null;
        }

        @Override
        public long getItemId(int position) {
            return 0;
        }

        @Override
        public View getView(int position, View convertView, ViewGroup parent) {
            TextView textView = null;
            if (null == convertView) {
                convertView = new TextView(context);
                convertView.setLayoutParams(new LayoutParams(LayoutParams.MATCH_PARENT, context.getResources().getDimensionPixelSize(R.dimen.dimen_50)));
                textView = (TextView) convertView;
                textView.setGravity(Gravity.CENTER);
                textView.setTextSize(TypedValue.COMPLEX_UNIT_DIP, 16f);
                textView.setTextColor(Color.BLACK);
                textView.setMaxLines(1);
                textView.setEllipsize(TruncateAt.END);
            }else{
                textView = (TextView) convertView;
            }
            textView.setText(items[position]);
            return convertView;
        }

    }
}

6）其他资源文件和工具类就不一一贴出，有基础的同学，通过以上代码就可以了解清楚了。

5.Demo下载地址

http://download.csdn.net/detail/zhuyb829/9405072